A stackable chip carrier, made from plural layers of Kapton or other plastic material, and which may be made using conventional flex circuit techniques, has a central opening, a plurality of stacking apertures extending through the thickness thereof between opposite surfaces of the carrier and a conductive...http://www.google.com.au/patents/US6180881?utm_source=gb-gplus-sharePatent US6180881 - Chip stack and method of making same
